Replace text using sed

Question

i am having trouble replacing the modified date in my script via sed.

I am getting the last modified date like this:

olddate=`grep -m1 \"Built \" script.         


        

Answer 1

use sed "s#$olddate#$newdate#g"

that should work

Answer 2

Use , instead of / !

sed -i "" "s,$olddate,$newdate,g" script.sh

In fact you can use almost any char as separators.

Answer 3

You can use separators other than slashes, for instance ";"

sed -i "" "s;$olddate;$newdate;g" script.sh